Help needed please !!!

Jared Hodge jared_hodge at iat.utexas.edu
Fri Jan 5 09:21:41 EST 2001


I have a dumb idea, or at least a dumb suggestion.  You say your problem
involves a lot of iterations that you want to execute in parallel.  If
you don't need to complete one iteration before beginning the next, you
could very easily write a shell script to farm out the iterations to
different processors and combine the results.  This could be your
parallel "executable".  If this is the case (the "Embarrassingly
Parallel" that RGB was talking about), then you could use a very
advanced timing routing, "date" or something like that.  This probably
isn't the case, though, since I doubt you would be asking for help if it
were.  The problem is that if it isn't, you have to speed up every
iteration of the loop through parallelism, something that may not be
easy if the number of iterations is very large since you'll lose some
time just waiting on communication because of network latency.  So if at
all possible, go with Embarrassingly parallel.  Keep it simple.  Hey I
told you this was a dumb idea, that's why they call it embarrassingly
parallel.

Krishna Prasad wrote:
> 
> Hello anyone,
> 
>           I am doing my Btech Final year project in clustering.
> I have gone through various projects given in beowulf site and Still I
> coudn't make out the basic idea of how to split a job into parallely
> executably form.  I plan to do my project on linux.
>            What I plan to do is to split a process involving lot of
> iterations into parallelly executable form and execute in the different
> nodes of the cluster.  Please someone guide in simple terms as to how to
> split the process or where to find the information about it.  Can it be
> completed within 2 months time as it is my limit. Which language is suitable
> for this?  What program or job can be used as input for this?
> 
>           Also tell me how could I show the time taken for execution when a
> process is executed serially and in a cluster.
>           What we have is 3 nodes with lan connection in our college lab
> each of having a  pentium processor with linux loaded in them.
> 
> Please reply soon as my time is limited.
> 
> Thanks in advance.
> My email addresses are: sita_krish at hotmail.com and
> sita_krish at rediffmail.com.
> krishna prasad
> 
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-- 
Jared Hodge
Institute for Advanced Technology
The University of Texas at Austin
3925 W. Braker Lane, Suite 400
Austin, Texas 78759

Phone: 512-232-4460
FAX: 512-471-9096
Email: Jared_Hodge at iat.utexas.edu

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